1
2
3
4
5
6
7
8
9#define KMSG_COMPONENT "qeth"
10#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
11
12#include <linux/module.h>
13#include <linux/moduleparam.h>
14#include <linux/string.h>
15#include <linux/errno.h>
16#include <linux/kernel.h>
17#include <linux/slab.h>
18#include <linux/etherdevice.h>
19#include <linux/mii.h>
20#include <linux/ip.h>
21#include <linux/list.h>
22
23#include "qeth_core.h"
24
25static int qeth_l2_set_offline(struct ccwgroup_device *);
26static int qeth_l2_stop(struct net_device *);
27static int qeth_l2_send_delmac(struct qeth_card *, __u8 *);
28static int qeth_l2_send_setdelmac(struct qeth_card *, __u8 *,
29 enum qeth_ipa_cmds,
30 int (*reply_cb) (struct qeth_card *,
31 struct qeth_reply*,
32 unsigned long));
33static void qeth_l2_set_multicast_list(struct net_device *);
34static int qeth_l2_recover(void *);
35
36static int qeth_l2_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
37{
38 struct qeth_card *card = dev->ml_priv;
39 struct mii_ioctl_data *mii_data;
40 int rc = 0;
41
42 if (!card)
43 return -ENODEV;
44
45 if ((card->state != CARD_STATE_UP) &&
46 (card->state != CARD_STATE_SOFTSETUP))
47 return -ENODEV;
48
49 if (card->info.type == QETH_CARD_TYPE_OSN)
50 return -EPERM;
51
52 switch (cmd) {
53 case SIOC_QETH_ADP_SET_SNMP_CONTROL:
54 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data);
55 break;
56 case SIOC_QETH_GET_CARD_TYPE:
57 if ((card->info.type == QETH_CARD_TYPE_OSD ||
58 card->info.type == QETH_CARD_TYPE_OSM ||
59 card->info.type == QETH_CARD_TYPE_OSX) &&
60 !card->info.guestlan)
61 return 1;
62 return 0;
63 break;
64 case SIOCGMIIPHY:
65 mii_data = if_mii(rq);
66 mii_data->phy_id = 0;
67 break;
68 case SIOCGMIIREG:
69 mii_data = if_mii(rq);
70 if (mii_data->phy_id != 0)
71 rc = -EINVAL;
72 else
73 mii_data->val_out = qeth_mdio_read(dev,
74 mii_data->phy_id, mii_data->reg_num);
75 break;
76 case SIOC_QETH_QUERY_OAT:
77 rc = qeth_query_oat_command(card, rq->ifr_ifru.ifru_data);
78 break;
79 default:
80 rc = -EOPNOTSUPP;
81 }
82 if (rc)
83 QETH_CARD_TEXT_(card, 2, "ioce%d", rc);
84 return rc;
85}
86
87static int qeth_l2_verify_dev(struct net_device *dev)
88{
89 struct qeth_card *card;
90 unsigned long flags;
91 int rc = 0;
92
93 read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
94 list_for_each_entry(card, &qeth_core_card_list.list, list) {
95 if (card->dev == dev) {
96 rc = QETH_REAL_CARD;
97 break;
98 }
99 }
100 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
101
102 return rc;
103}
104
105static struct net_device *qeth_l2_netdev_by_devno(unsigned char *read_dev_no)
106{
107 struct qeth_card *card;
108 struct net_device *ndev;
109 __u16 temp_dev_no;
110 unsigned long flags;
111 struct ccw_dev_id read_devid;
112
113 ndev = NULL;
114 memcpy(&temp_dev_no, read_dev_no, 2);
115 read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
116 list_for_each_entry(card, &qeth_core_card_list.list, list) {
117 ccw_device_get_id(CARD_RDEV(card), &read_devid);
118 if (read_devid.devno == temp_dev_no) {
119 ndev = card->dev;
120 break;
121 }
122 }
123 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
124 return ndev;
125}
126
127static int qeth_l2_send_setgroupmac_cb(struct qeth_card *card,
128 struct qeth_reply *reply,
129 unsigned long data)
130{
131 struct qeth_ipa_cmd *cmd;
132 __u8 *mac;
133
134 QETH_CARD_TEXT(card, 2, "L2Sgmacb");
135 cmd = (struct qeth_ipa_cmd *) data;
136 mac = &cmd->data.setdelmac.mac[0];
137
138 if (cmd->hdr.return_code == IPA_RC_L2_DUP_MAC) {
139 QETH_DBF_MESSAGE(2, "Group MAC %pM already existing on %s \n",
140 mac, QETH_CARD_IFNAME(card));
141 cmd->hdr.return_code = 0;
142 }
143 if (cmd->hdr.return_code)
144 QETH_DBF_MESSAGE(2, "Could not set group MAC %pM on %s: %x\n",
145 mac, QETH_CARD_IFNAME(card), cmd->hdr.return_code);
146 return 0;
147}
148
149static int qeth_l2_send_setgroupmac(struct qeth_card *card, __u8 *mac)
150{
151 QETH_CARD_TEXT(card, 2, "L2Sgmac");
152 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETGMAC,
153 qeth_l2_send_setgroupmac_cb);
154}
155
156static int qeth_l2_send_delgroupmac_cb(struct qeth_card *card,
157 struct qeth_reply *reply,
158 unsigned long data)
159{
160 struct qeth_ipa_cmd *cmd;
161 __u8 *mac;
162
163 QETH_CARD_TEXT(card, 2, "L2Dgmacb");
164 cmd = (struct qeth_ipa_cmd *) data;
165 mac = &cmd->data.setdelmac.mac[0];
166 if (cmd->hdr.return_code)
167 QETH_DBF_MESSAGE(2, "Could not delete group MAC %pM on %s: %x\n",
168 mac, QETH_CARD_IFNAME(card), cmd->hdr.return_code);
169 return 0;
170}
171
172static int qeth_l2_send_delgroupmac(struct qeth_card *card, __u8 *mac)
173{
174 QETH_CARD_TEXT(card, 2, "L2Dgmac");
175 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_DELGMAC,
176 qeth_l2_send_delgroupmac_cb);
177}
178
179static void qeth_l2_add_mc(struct qeth_card *card, __u8 *mac, int vmac)
180{
181 struct qeth_mc_mac *mc;
182 int rc;
183
184 mc = kmalloc(sizeof(struct qeth_mc_mac), GFP_ATOMIC);
185
186 if (!mc)
187 return;
188
189 memcpy(mc->mc_addr, mac, OSA_ADDR_LEN);
190 mc->mc_addrlen = OSA_ADDR_LEN;
191 mc->is_vmac = vmac;
192
193 if (vmac) {
194 rc = qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETVMAC,
195 NULL);
196 } else {
197 rc = qeth_l2_send_setgroupmac(card, mac);
198 }
199
200 if (!rc)
201 list_add_tail(&mc->list, &card->mc_list);
202 else
203 kfree(mc);
204}
205
206static void qeth_l2_del_all_mc(struct qeth_card *card, int del)
207{
208 struct qeth_mc_mac *mc, *tmp;
209
210 spin_lock_bh(&card->mclock);
211 list_for_each_entry_safe(mc, tmp, &card->mc_list, list) {
212 if (del) {
213 if (mc->is_vmac)
214 qeth_l2_send_setdelmac(card, mc->mc_addr,
215 IPA_CMD_DELVMAC, NULL);
216 else
217 qeth_l2_send_delgroupmac(card, mc->mc_addr);
218 }
219 list_del(&mc->list);
220 kfree(mc);
221 }
222 spin_unlock_bh(&card->mclock);
223}
224
225static inline int qeth_l2_get_cast_type(struct qeth_card *card,
226 struct sk_buff *skb)
227{
228 if (card->info.type == QETH_CARD_TYPE_OSN)
229 return RTN_UNSPEC;
230 if (is_broadcast_ether_addr(skb->data))
231 return RTN_BROADCAST;
232 if (is_multicast_ether_addr(skb->data))
233 return RTN_MULTICAST;
234 return RTN_UNSPEC;
235}
236
237static void qeth_l2_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
238 struct sk_buff *skb, int ipv, int cast_type)
239{
240 struct vlan_ethhdr *veth = (struct vlan_ethhdr *)skb_mac_header(skb);
241
242 memset(hdr, 0, sizeof(struct qeth_hdr));
243 hdr->hdr.l2.id = QETH_HEADER_TYPE_LAYER2;
244
245
246 if (cast_type == RTN_MULTICAST)
247 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_MULTICAST;
248 else if (cast_type == RTN_BROADCAST)
249 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_BROADCAST;
250 else
251 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_UNICAST;
252
253 hdr->hdr.l2.pkt_length = skb->len-QETH_HEADER_SIZE;
254
255
256
257 if (veth->h_vlan_proto == __constant_htons(ETH_P_8021Q)) {
258 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_VLAN;
259 hdr->hdr.l2.vlan_id = ntohs(veth->h_vlan_TCI);
260 }
261}
262
263static int qeth_l2_send_setdelvlan_cb(struct qeth_card *card,
264 struct qeth_reply *reply, unsigned long data)
265{
266 struct qeth_ipa_cmd *cmd;
267
268 QETH_CARD_TEXT(card, 2, "L2sdvcb");
269 cmd = (struct qeth_ipa_cmd *) data;
270 if (cmd->hdr.return_code) {
271 QETH_DBF_MESSAGE(2, "Error in processing VLAN %i on %s: 0x%x. "
272 "Continuing\n", cmd->data.setdelvlan.vlan_id,
273 QETH_CARD_IFNAME(card), cmd->hdr.return_code);
274 QETH_CARD_TEXT_(card, 2, "L2VL%4x", cmd->hdr.command);
275 QETH_CARD_TEXT_(card, 2, "err%d", cmd->hdr.return_code);
276 }
277 return 0;
278}
279
280static int qeth_l2_send_setdelvlan(struct qeth_card *card, __u16 i,
281 enum qeth_ipa_cmds ipacmd)
282{
283 struct qeth_ipa_cmd *cmd;
284 struct qeth_cmd_buffer *iob;
285
286 QETH_CARD_TEXT_(card, 4, "L2sdv%x", ipacmd);
287 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
288 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
289 cmd->data.setdelvlan.vlan_id = i;
290 return qeth_send_ipa_cmd(card, iob,
291 qeth_l2_send_setdelvlan_cb, NULL);
292}
293
294static void qeth_l2_process_vlans(struct qeth_card *card)
295{
296 struct qeth_vlan_vid *id;
297 QETH_CARD_TEXT(card, 3, "L2prcvln");
298 spin_lock_bh(&card->vlanlock);
299 list_for_each_entry(id, &card->vid_list, list) {
300 qeth_l2_send_setdelvlan(card, id->vid, IPA_CMD_SETVLAN);
301 }
302 spin_unlock_bh(&card->vlanlock);
303}
304
305static int qeth_l2_vlan_rx_add_vid(struct net_device *dev,
306 __be16 proto, u16 vid)
307{
308 struct qeth_card *card = dev->ml_priv;
309 struct qeth_vlan_vid *id;
310
311 QETH_CARD_TEXT_(card, 4, "aid:%d", vid);
312 if (!vid)
313 return 0;
314 if (card->info.type == QETH_CARD_TYPE_OSM) {
315 QETH_CARD_TEXT(card, 3, "aidOSM");
316 return 0;
317 }
318 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
319 QETH_CARD_TEXT(card, 3, "aidREC");
320 return 0;
321 }
322 id = kmalloc(sizeof(struct qeth_vlan_vid), GFP_ATOMIC);
323 if (id) {
324 id->vid = vid;
325 qeth_l2_send_setdelvlan(card, vid, IPA_CMD_SETVLAN);
326 spin_lock_bh(&card->vlanlock);
327 list_add_tail(&id->list, &card->vid_list);
328 spin_unlock_bh(&card->vlanlock);
329 } else {
330 return -ENOMEM;
331 }
332 return 0;
333}
334
335static int qeth_l2_vlan_rx_kill_vid(struct net_device *dev,
336 __be16 proto, u16 vid)
337{
338 struct qeth_vlan_vid *id, *tmpid = NULL;
339 struct qeth_card *card = dev->ml_priv;
340
341 QETH_CARD_TEXT_(card, 4, "kid:%d", vid);
342 if (card->info.type == QETH_CARD_TYPE_OSM) {
343 QETH_CARD_TEXT(card, 3, "kidOSM");
344 return 0;
345 }
346 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
347 QETH_CARD_TEXT(card, 3, "kidREC");
348 return 0;
349 }
350 spin_lock_bh(&card->vlanlock);
351 list_for_each_entry(id, &card->vid_list, list) {
352 if (id->vid == vid) {
353 list_del(&id->list);
354 tmpid = id;
355 break;
356 }
357 }
358 spin_unlock_bh(&card->vlanlock);
359 if (tmpid) {
360 qeth_l2_send_setdelvlan(card, vid, IPA_CMD_DELVLAN);
361 kfree(tmpid);
362 }
363 qeth_l2_set_multicast_list(card->dev);
364 return 0;
365}
366
367static int qeth_l2_stop_card(struct qeth_card *card, int recovery_mode)
368{
369 int rc = 0;
370
371 QETH_DBF_TEXT(SETUP , 2, "stopcard");
372 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
373
374 qeth_set_allowed_threads(card, 0, 1);
375 if (card->read.state == CH_STATE_UP &&
376 card->write.state == CH_STATE_UP &&
377 (card->state == CARD_STATE_UP)) {
378 if (recovery_mode &&
379 card->info.type != QETH_CARD_TYPE_OSN) {
380 qeth_l2_stop(card->dev);
381 } else {
382 rtnl_lock();
383 dev_close(card->dev);
384 rtnl_unlock();
385 }
386 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
387 card->state = CARD_STATE_SOFTSETUP;
388 }
389 if (card->state == CARD_STATE_SOFTSETUP) {
390 qeth_l2_del_all_mc(card, 0);
391 qeth_clear_ipacmd_list(card);
392 card->state = CARD_STATE_HARDSETUP;
393 }
394 if (card->state == CARD_STATE_HARDSETUP) {
395 qeth_qdio_clear_card(card, 0);
396 qeth_clear_qdio_buffers(card);
397 qeth_clear_working_pool_list(card);
398 card->state = CARD_STATE_DOWN;
399 }
400 if (card->state == CARD_STATE_DOWN) {
401 qeth_clear_cmd_buffers(&card->read);
402 qeth_clear_cmd_buffers(&card->write);
403 }
404 return rc;
405}
406
407static int qeth_l2_process_inbound_buffer(struct qeth_card *card,
408 int budget, int *done)
409{
410 int work_done = 0;
411 struct sk_buff *skb;
412 struct qeth_hdr *hdr;
413 unsigned int len;
414
415 *done = 0;
416 WARN_ON_ONCE(!budget);
417 while (budget) {
418 skb = qeth_core_get_next_skb(card,
419 &card->qdio.in_q->bufs[card->rx.b_index],
420 &card->rx.b_element, &card->rx.e_offset, &hdr);
421 if (!skb) {
422 *done = 1;
423 break;
424 }
425 skb->dev = card->dev;
426 switch (hdr->hdr.l2.id) {
427 case QETH_HEADER_TYPE_LAYER2:
428 skb->pkt_type = PACKET_HOST;
429 skb->protocol = eth_type_trans(skb, skb->dev);
430 skb->ip_summed = CHECKSUM_NONE;
431 if (skb->protocol == htons(ETH_P_802_2))
432 *((__u32 *)skb->cb) = ++card->seqno.pkt_seqno;
433 len = skb->len;
434 netif_receive_skb(skb);
435 break;
436 case QETH_HEADER_TYPE_OSN:
437 if (card->info.type == QETH_CARD_TYPE_OSN) {
438 skb_push(skb, sizeof(struct qeth_hdr));
439 skb_copy_to_linear_data(skb, hdr,
440 sizeof(struct qeth_hdr));
441 len = skb->len;
442 card->osn_info.data_cb(skb);
443 break;
444 }
445
446 default:
447 dev_kfree_skb_any(skb);
448 QETH_CARD_TEXT(card, 3, "inbunkno");
449 QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN);
450 continue;
451 }
452 work_done++;
453 budget--;
454 card->stats.rx_packets++;
455 card->stats.rx_bytes += len;
456 }
457 return work_done;
458}
459
460static int qeth_l2_poll(struct napi_struct *napi, int budget)
461{
462 struct qeth_card *card = container_of(napi, struct qeth_card, napi);
463 int work_done = 0;
464 struct qeth_qdio_buffer *buffer;
465 int done;
466 int new_budget = budget;
467
468 if (card->options.performance_stats) {
469 card->perf_stats.inbound_cnt++;
470 card->perf_stats.inbound_start_time = qeth_get_micros();
471 }
472
473 while (1) {
474 if (!card->rx.b_count) {
475 card->rx.qdio_err = 0;
476 card->rx.b_count = qdio_get_next_buffers(
477 card->data.ccwdev, 0, &card->rx.b_index,
478 &card->rx.qdio_err);
479 if (card->rx.b_count <= 0) {
480 card->rx.b_count = 0;
481 break;
482 }
483 card->rx.b_element =
484 &card->qdio.in_q->bufs[card->rx.b_index]
485 .buffer->element[0];
486 card->rx.e_offset = 0;
487 }
488
489 while (card->rx.b_count) {
490 buffer = &card->qdio.in_q->bufs[card->rx.b_index];
491 if (!(card->rx.qdio_err &&
492 qeth_check_qdio_errors(card, buffer->buffer,
493 card->rx.qdio_err, "qinerr")))
494 work_done += qeth_l2_process_inbound_buffer(
495 card, new_budget, &done);
496 else
497 done = 1;
498
499 if (done) {
500 if (card->options.performance_stats)
501 card->perf_stats.bufs_rec++;
502 qeth_put_buffer_pool_entry(card,
503 buffer->pool_entry);
504 qeth_queue_input_buffer(card, card->rx.b_index);
505 card->rx.b_count--;
506 if (card->rx.b_count) {
507 card->rx.b_index =
508 (card->rx.b_index + 1) %
509 QDIO_MAX_BUFFERS_PER_Q;
510 card->rx.b_element =
511 &card->qdio.in_q
512 ->bufs[card->rx.b_index]
513 .buffer->element[0];
514 card->rx.e_offset = 0;
515 }
516 }
517
518 if (work_done >= budget)
519 goto out;
520 else
521 new_budget = budget - work_done;
522 }
523 }
524
525 napi_complete(napi);
526 if (qdio_start_irq(card->data.ccwdev, 0))
527 napi_schedule(&card->napi);
528out:
529 if (card->options.performance_stats)
530 card->perf_stats.inbound_time += qeth_get_micros() -
531 card->perf_stats.inbound_start_time;
532 return work_done;
533}
534
535static int qeth_l2_send_setdelmac(struct qeth_card *card, __u8 *mac,
536 enum qeth_ipa_cmds ipacmd,
537 int (*reply_cb) (struct qeth_card *,
538 struct qeth_reply*,
539 unsigned long))
540{
541 struct qeth_ipa_cmd *cmd;
542 struct qeth_cmd_buffer *iob;
543
544 QETH_CARD_TEXT(card, 2, "L2sdmac");
545 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
546 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
547 cmd->data.setdelmac.mac_length = OSA_ADDR_LEN;
548 memcpy(&cmd->data.setdelmac.mac, mac, OSA_ADDR_LEN);
549 return qeth_send_ipa_cmd(card, iob, reply_cb, NULL);
550}
551
552static int qeth_l2_send_setmac_cb(struct qeth_card *card,
553 struct qeth_reply *reply,
554 unsigned long data)
555{
556 struct qeth_ipa_cmd *cmd;
557
558 QETH_CARD_TEXT(card, 2, "L2Smaccb");
559 cmd = (struct qeth_ipa_cmd *) data;
560 if (cmd->hdr.return_code) {
561 QETH_CARD_TEXT_(card, 2, "L2er%x", cmd->hdr.return_code);
562 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
563 switch (cmd->hdr.return_code) {
564 case IPA_RC_L2_DUP_MAC:
565 case IPA_RC_L2_DUP_LAYER3_MAC:
566 dev_warn(&card->gdev->dev,
567 "MAC address %pM already exists\n",
568 cmd->data.setdelmac.mac);
569 break;
570 case IPA_RC_L2_MAC_NOT_AUTH_BY_HYP:
571 case IPA_RC_L2_MAC_NOT_AUTH_BY_ADP:
572 dev_warn(&card->gdev->dev,
573 "MAC address %pM is not authorized\n",
574 cmd->data.setdelmac.mac);
575 break;
576 default:
577 break;
578 }
579 } else {
580 card->info.mac_bits |= QETH_LAYER2_MAC_REGISTERED;
581 memcpy(card->dev->dev_addr, cmd->data.setdelmac.mac,
582 OSA_ADDR_LEN);
583 dev_info(&card->gdev->dev,
584 "MAC address %pM successfully registered on device %s\n",
585 card->dev->dev_addr, card->dev->name);
586 }
587 return 0;
588}
589
590static int qeth_l2_send_setmac(struct qeth_card *card, __u8 *mac)
591{
592 QETH_CARD_TEXT(card, 2, "L2Setmac");
593 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETVMAC,
594 qeth_l2_send_setmac_cb);
595}
596
597static int qeth_l2_send_delmac_cb(struct qeth_card *card,
598 struct qeth_reply *reply,
599 unsigned long data)
600{
601 struct qeth_ipa_cmd *cmd;
602
603 QETH_CARD_TEXT(card, 2, "L2Dmaccb");
604 cmd = (struct qeth_ipa_cmd *) data;
605 if (cmd->hdr.return_code) {
606 QETH_CARD_TEXT_(card, 2, "err%d", cmd->hdr.return_code);
607 return 0;
608 }
609 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
610
611 return 0;
612}
613
614static int qeth_l2_send_delmac(struct qeth_card *card, __u8 *mac)
615{
616 QETH_CARD_TEXT(card, 2, "L2Delmac");
617 if (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))
618 return 0;
619 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_DELVMAC,
620 qeth_l2_send_delmac_cb);
621}
622
623static int qeth_l2_request_initial_mac(struct qeth_card *card)
624{
625 int rc = 0;
626 char vendor_pre[] = {0x02, 0x00, 0x00};
627
628 QETH_DBF_TEXT(SETUP, 2, "doL2init");
629 QETH_DBF_TEXT_(SETUP, 2, "doL2%s", CARD_BUS_ID(card));
630
631 if (qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
632 rc = qeth_query_setadapterparms(card);
633 if (rc) {
634 QETH_DBF_MESSAGE(2, "could not query adapter "
635 "parameters on device %s: x%x\n",
636 CARD_BUS_ID(card), rc);
637 }
638 }
639
640 if (card->info.type == QETH_CARD_TYPE_IQD ||
641 card->info.type == QETH_CARD_TYPE_OSM ||
642 card->info.type == QETH_CARD_TYPE_OSX ||
643 card->info.guestlan) {
644 rc = qeth_setadpparms_change_macaddr(card);
645 if (rc) {
646 QETH_DBF_MESSAGE(2, "couldn't get MAC address on "
647 "device %s: x%x\n", CARD_BUS_ID(card), rc);
648 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
649 return rc;
650 }
651 QETH_DBF_HEX(SETUP, 2, card->dev->dev_addr, OSA_ADDR_LEN);
652 } else {
653 eth_random_addr(card->dev->dev_addr);
654 memcpy(card->dev->dev_addr, vendor_pre, 3);
655 }
656 return 0;
657}
658
659static int qeth_l2_set_mac_address(struct net_device *dev, void *p)
660{
661 struct sockaddr *addr = p;
662 struct qeth_card *card = dev->ml_priv;
663 int rc = 0;
664
665 QETH_CARD_TEXT(card, 3, "setmac");
666
667 if (qeth_l2_verify_dev(dev) != QETH_REAL_CARD) {
668 QETH_CARD_TEXT(card, 3, "setmcINV");
669 return -EOPNOTSUPP;
670 }
671
672 if (card->info.type == QETH_CARD_TYPE_OSN ||
673 card->info.type == QETH_CARD_TYPE_OSM ||
674 card->info.type == QETH_CARD_TYPE_OSX) {
675 QETH_CARD_TEXT(card, 3, "setmcTYP");
676 return -EOPNOTSUPP;
677 }
678 QETH_CARD_HEX(card, 3, addr->sa_data, OSA_ADDR_LEN);
679 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
680 QETH_CARD_TEXT(card, 3, "setmcREC");
681 return -ERESTARTSYS;
682 }
683 rc = qeth_l2_send_delmac(card, &card->dev->dev_addr[0]);
684 if (!rc || (rc == IPA_RC_L2_MAC_NOT_FOUND))
685 rc = qeth_l2_send_setmac(card, addr->sa_data);
686 return rc ? -EINVAL : 0;
687}
688
689static void qeth_l2_set_multicast_list(struct net_device *dev)
690{
691 struct qeth_card *card = dev->ml_priv;
692 struct netdev_hw_addr *ha;
693
694 if (card->info.type == QETH_CARD_TYPE_OSN)
695 return ;
696
697 QETH_CARD_TEXT(card, 3, "setmulti");
698 if (qeth_threads_running(card, QETH_RECOVER_THREAD) &&
699 (card->state != CARD_STATE_UP))
700 return;
701 qeth_l2_del_all_mc(card, 1);
702 spin_lock_bh(&card->mclock);
703 netdev_for_each_mc_addr(ha, dev)
704 qeth_l2_add_mc(card, ha->addr, 0);
705
706 netdev_for_each_uc_addr(ha, dev)
707 qeth_l2_add_mc(card, ha->addr, 1);
708
709 spin_unlock_bh(&card->mclock);
710 if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
711 return;
712 qeth_setadp_promisc_mode(card);
713}
714
715static int qeth_l2_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
716{
717 int rc;
718 struct qeth_hdr *hdr = NULL;
719 int elements = 0;
720 struct qeth_card *card = dev->ml_priv;
721 struct sk_buff *new_skb = skb;
722 int ipv = qeth_get_ip_version(skb);
723 int cast_type = qeth_l2_get_cast_type(card, skb);
724 struct qeth_qdio_out_q *queue = card->qdio.out_qs
725 [qeth_get_priority_queue(card, skb, ipv, cast_type)];
726 int tx_bytes = skb->len;
727 int data_offset = -1;
728 int elements_needed = 0;
729 int hd_len = 0;
730
731 if ((card->state != CARD_STATE_UP) || !card->lan_online) {
732 card->stats.tx_carrier_errors++;
733 goto tx_drop;
734 }
735
736 if ((card->info.type == QETH_CARD_TYPE_OSN) &&
737 (skb->protocol == htons(ETH_P_IPV6)))
738 goto tx_drop;
739
740 if (card->options.performance_stats) {
741 card->perf_stats.outbound_cnt++;
742 card->perf_stats.outbound_start_time = qeth_get_micros();
743 }
744 netif_stop_queue(dev);
745
746 if (card->info.type == QETH_CARD_TYPE_OSN)
747 hdr = (struct qeth_hdr *)skb->data;
748 else {
749 if (card->info.type == QETH_CARD_TYPE_IQD) {
750 new_skb = skb;
751 data_offset = ETH_HLEN;
752 hd_len = ETH_HLEN;
753 hdr = kmem_cache_alloc(qeth_core_header_cache,
754 GFP_ATOMIC);
755 if (!hdr)
756 goto tx_drop;
757 elements_needed++;
758 skb_reset_mac_header(new_skb);
759 qeth_l2_fill_header(card, hdr, new_skb, ipv, cast_type);
760 hdr->hdr.l2.pkt_length = new_skb->len;
761 memcpy(((char *)hdr) + sizeof(struct qeth_hdr),
762 skb_mac_header(new_skb), ETH_HLEN);
763 } else {
764
765 new_skb = skb_realloc_headroom(skb,
766 sizeof(struct qeth_hdr));
767 if (!new_skb)
768 goto tx_drop;
769 hdr = (struct qeth_hdr *)skb_push(new_skb,
770 sizeof(struct qeth_hdr));
771 skb_set_mac_header(new_skb, sizeof(struct qeth_hdr));
772 qeth_l2_fill_header(card, hdr, new_skb, ipv, cast_type);
773 }
774 }
775
776 elements = qeth_get_elements_no(card, new_skb, elements_needed);
777 if (!elements) {
778 if (data_offset >= 0)
779 kmem_cache_free(qeth_core_header_cache, hdr);
780 goto tx_drop;
781 }
782
783 if (card->info.type != QETH_CARD_TYPE_IQD) {
784 if (qeth_hdr_chk_and_bounce(new_skb, &hdr,
785 sizeof(struct qeth_hdr_layer2)))
786 goto tx_drop;
787 rc = qeth_do_send_packet(card, queue, new_skb, hdr,
788 elements);
789 } else
790 rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr,
791 elements, data_offset, hd_len);
792 if (!rc) {
793 card->stats.tx_packets++;
794 card->stats.tx_bytes += tx_bytes;
795 if (new_skb != skb)
796 dev_kfree_skb_any(skb);
797 rc = NETDEV_TX_OK;
798 } else {
799 if (data_offset >= 0)
800 kmem_cache_free(qeth_core_header_cache, hdr);
801
802 if (rc == -EBUSY) {
803 if (new_skb != skb)
804 dev_kfree_skb_any(new_skb);
805 return NETDEV_TX_BUSY;
806 } else
807 goto tx_drop;
808 }
809
810 netif_wake_queue(dev);
811 if (card->options.performance_stats)
812 card->perf_stats.outbound_time += qeth_get_micros() -
813 card->perf_stats.outbound_start_time;
814 return rc;
815
816tx_drop:
817 card->stats.tx_dropped++;
818 card->stats.tx_errors++;
819 if ((new_skb != skb) && new_skb)
820 dev_kfree_skb_any(new_skb);
821 dev_kfree_skb_any(skb);
822 netif_wake_queue(dev);
823 return NETDEV_TX_OK;
824}
825
826static int __qeth_l2_open(struct net_device *dev)
827{
828 struct qeth_card *card = dev->ml_priv;
829 int rc = 0;
830
831 QETH_CARD_TEXT(card, 4, "qethopen");
832 if (card->state == CARD_STATE_UP)
833 return rc;
834 if (card->state != CARD_STATE_SOFTSETUP)
835 return -ENODEV;
836
837 if ((card->info.type != QETH_CARD_TYPE_OSN) &&
838 (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))) {
839 QETH_CARD_TEXT(card, 4, "nomacadr");
840 return -EPERM;
841 }
842 card->data.state = CH_STATE_UP;
843 card->state = CARD_STATE_UP;
844 netif_start_queue(dev);
845
846 if (qdio_stop_irq(card->data.ccwdev, 0) >= 0) {
847 napi_enable(&card->napi);
848 napi_schedule(&card->napi);
849 } else
850 rc = -EIO;
851 return rc;
852}
853
854static int qeth_l2_open(struct net_device *dev)
855{
856 struct qeth_card *card = dev->ml_priv;
857
858 QETH_CARD_TEXT(card, 5, "qethope_");
859 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
860 QETH_CARD_TEXT(card, 3, "openREC");
861 return -ERESTARTSYS;
862 }
863 return __qeth_l2_open(dev);
864}
865
866static int qeth_l2_stop(struct net_device *dev)
867{
868 struct qeth_card *card = dev->ml_priv;
869
870 QETH_CARD_TEXT(card, 4, "qethstop");
871 netif_tx_disable(dev);
872 if (card->state == CARD_STATE_UP) {
873 card->state = CARD_STATE_SOFTSETUP;
874 napi_disable(&card->napi);
875 }
876 return 0;
877}
878
879static int qeth_l2_probe_device(struct ccwgroup_device *gdev)
880{
881 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
882
883 INIT_LIST_HEAD(&card->vid_list);
884 INIT_LIST_HEAD(&card->mc_list);
885 card->options.layer2 = 1;
886 card->info.hwtrap = 0;
887 return 0;
888}
889
890static void qeth_l2_remove_device(struct ccwgroup_device *cgdev)
891{
892 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
893
894 qeth_set_allowed_threads(card, 0, 1);
895 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
896
897 if (cgdev->state == CCWGROUP_ONLINE)
898 qeth_l2_set_offline(cgdev);
899
900 if (card->dev) {
901 unregister_netdev(card->dev);
902 card->dev = NULL;
903 }
904 return;
905}
906
907static const struct ethtool_ops qeth_l2_ethtool_ops = {
908 .get_link = ethtool_op_get_link,
909 .get_strings = qeth_core_get_strings,
910 .get_ethtool_stats = qeth_core_get_ethtool_stats,
911 .get_sset_count = qeth_core_get_sset_count,
912 .get_drvinfo = qeth_core_get_drvinfo,
913 .get_settings = qeth_core_ethtool_get_settings,
914};
915
916static const struct ethtool_ops qeth_l2_osn_ops = {
917 .get_strings = qeth_core_get_strings,
918 .get_ethtool_stats = qeth_core_get_ethtool_stats,
919 .get_sset_count = qeth_core_get_sset_count,
920 .get_drvinfo = qeth_core_get_drvinfo,
921};
922
923static const struct net_device_ops qeth_l2_netdev_ops = {
924 .ndo_open = qeth_l2_open,
925 .ndo_stop = qeth_l2_stop,
926 .ndo_get_stats = qeth_get_stats,
927 .ndo_start_xmit = qeth_l2_hard_start_xmit,
928 .ndo_validate_addr = eth_validate_addr,
929 .ndo_set_rx_mode = qeth_l2_set_multicast_list,
930 .ndo_do_ioctl = qeth_l2_do_ioctl,
931 .ndo_set_mac_address = qeth_l2_set_mac_address,
932 .ndo_change_mtu = qeth_change_mtu,
933 .ndo_vlan_rx_add_vid = qeth_l2_vlan_rx_add_vid,
934 .ndo_vlan_rx_kill_vid = qeth_l2_vlan_rx_kill_vid,
935 .ndo_tx_timeout = qeth_tx_timeout,
936};
937
938static int qeth_l2_setup_netdev(struct qeth_card *card)
939{
940 switch (card->info.type) {
941 case QETH_CARD_TYPE_IQD:
942 card->dev = alloc_netdev(0, "hsi%d", ether_setup);
943 break;
944 case QETH_CARD_TYPE_OSN:
945 card->dev = alloc_netdev(0, "osn%d", ether_setup);
946 card->dev->flags |= IFF_NOARP;
947 break;
948 default:
949 card->dev = alloc_etherdev(0);
950 }
951
952 if (!card->dev)
953 return -ENODEV;
954
955 card->dev->ml_priv = card;
956 card->dev->watchdog_timeo = QETH_TX_TIMEOUT;
957 card->dev->mtu = card->info.initial_mtu;
958 card->dev->netdev_ops = &qeth_l2_netdev_ops;
959 if (card->info.type != QETH_CARD_TYPE_OSN)
960 SET_ETHTOOL_OPS(card->dev, &qeth_l2_ethtool_ops);
961 else
962 SET_ETHTOOL_OPS(card->dev, &qeth_l2_osn_ops);
963 card->dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER;
964 card->info.broadcast_capable = 1;
965 qeth_l2_request_initial_mac(card);
966 SET_NETDEV_DEV(card->dev, &card->gdev->dev);
967 netif_napi_add(card->dev, &card->napi, qeth_l2_poll, QETH_NAPI_WEIGHT);
968 return register_netdev(card->dev);
969}
970
971static int __qeth_l2_set_online(struct ccwgroup_device *gdev, int recovery_mode)
972{
973 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
974 int rc = 0;
975 enum qeth_card_states recover_flag;
976
977 mutex_lock(&card->discipline_mutex);
978 mutex_lock(&card->conf_mutex);
979 QETH_DBF_TEXT(SETUP, 2, "setonlin");
980 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
981
982 recover_flag = card->state;
983 rc = qeth_core_hardsetup_card(card);
984 if (rc) {
985 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
986 rc = -ENODEV;
987 goto out_remove;
988 }
989 qeth_trace_features(card);
990
991 if (!card->dev && qeth_l2_setup_netdev(card)) {
992 rc = -ENODEV;
993 goto out_remove;
994 }
995
996 if (card->info.type != QETH_CARD_TYPE_OSN)
997 qeth_l2_send_setmac(card, &card->dev->dev_addr[0]);
998
999 if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) {
1000 if (card->info.hwtrap &&
1001 qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM))
1002 card->info.hwtrap = 0;
1003 } else
1004 card->info.hwtrap = 0;
1005
1006 card->state = CARD_STATE_HARDSETUP;
1007 memset(&card->rx, 0, sizeof(struct qeth_rx));
1008 qeth_print_status_message(card);
1009
1010
1011 QETH_DBF_TEXT(SETUP, 2, "softsetp");
1012
1013 rc = qeth_send_startlan(card);
1014 if (rc) {
1015 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1016 if (rc == 0xe080) {
1017 dev_warn(&card->gdev->dev,
1018 "The LAN is offline\n");
1019 card->lan_online = 0;
1020 goto contin;
1021 }
1022 rc = -ENODEV;
1023 goto out_remove;
1024 } else
1025 card->lan_online = 1;
1026
1027contin:
1028 if ((card->info.type == QETH_CARD_TYPE_OSD) ||
1029 (card->info.type == QETH_CARD_TYPE_OSX)) {
1030
1031 rc = qeth_set_access_ctrl_online(card, 0);
1032 if (rc) {
1033 rc = -ENODEV;
1034 goto out_remove;
1035 }
1036 }
1037
1038 if (card->info.type != QETH_CARD_TYPE_OSN &&
1039 card->info.type != QETH_CARD_TYPE_OSM)
1040 qeth_l2_process_vlans(card);
1041
1042 netif_tx_disable(card->dev);
1043
1044 rc = qeth_init_qdio_queues(card);
1045 if (rc) {
1046 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
1047 rc = -ENODEV;
1048 goto out_remove;
1049 }
1050 card->state = CARD_STATE_SOFTSETUP;
1051 if (card->lan_online)
1052 netif_carrier_on(card->dev);
1053 else
1054 netif_carrier_off(card->dev);
1055
1056 qeth_set_allowed_threads(card, 0xffffffff, 0);
1057 if (recover_flag == CARD_STATE_RECOVER) {
1058 if (recovery_mode &&
1059 card->info.type != QETH_CARD_TYPE_OSN) {
1060 __qeth_l2_open(card->dev);
1061 } else {
1062 rtnl_lock();
1063 dev_open(card->dev);
1064 rtnl_unlock();
1065 }
1066
1067 qeth_l2_set_multicast_list(card->dev);
1068 }
1069
1070 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
1071 mutex_unlock(&card->conf_mutex);
1072 mutex_unlock(&card->discipline_mutex);
1073 return 0;
1074
1075out_remove:
1076 qeth_l2_stop_card(card, 0);
1077 ccw_device_set_offline(CARD_DDEV(card));
1078 ccw_device_set_offline(CARD_WDEV(card));
1079 ccw_device_set_offline(CARD_RDEV(card));
1080 if (recover_flag == CARD_STATE_RECOVER)
1081 card->state = CARD_STATE_RECOVER;
1082 else
1083 card->state = CARD_STATE_DOWN;
1084 mutex_unlock(&card->conf_mutex);
1085 mutex_unlock(&card->discipline_mutex);
1086 return rc;
1087}
1088
1089static int qeth_l2_set_online(struct ccwgroup_device *gdev)
1090{
1091 return __qeth_l2_set_online(gdev, 0);
1092}
1093
1094static int __qeth_l2_set_offline(struct ccwgroup_device *cgdev,
1095 int recovery_mode)
1096{
1097 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
1098 int rc = 0, rc2 = 0, rc3 = 0;
1099 enum qeth_card_states recover_flag;
1100
1101 mutex_lock(&card->discipline_mutex);
1102 mutex_lock(&card->conf_mutex);
1103 QETH_DBF_TEXT(SETUP, 3, "setoffl");
1104 QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
1105
1106 if (card->dev && netif_carrier_ok(card->dev))
1107 netif_carrier_off(card->dev);
1108 recover_flag = card->state;
1109 if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) {
1110 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
1111 card->info.hwtrap = 1;
1112 }
1113 qeth_l2_stop_card(card, recovery_mode);
1114 rc = ccw_device_set_offline(CARD_DDEV(card));
1115 rc2 = ccw_device_set_offline(CARD_WDEV(card));
1116 rc3 = ccw_device_set_offline(CARD_RDEV(card));
1117 if (!rc)
1118 rc = (rc2) ? rc2 : rc3;
1119 if (rc)
1120 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1121 if (recover_flag == CARD_STATE_UP)
1122 card->state = CARD_STATE_RECOVER;
1123
1124 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
1125 mutex_unlock(&card->conf_mutex);
1126 mutex_unlock(&card->discipline_mutex);
1127 return 0;
1128}
1129
1130static int qeth_l2_set_offline(struct ccwgroup_device *cgdev)
1131{
1132 return __qeth_l2_set_offline(cgdev, 0);
1133}
1134
1135static int qeth_l2_recover(void *ptr)
1136{
1137 struct qeth_card *card;
1138 int rc = 0;
1139
1140 card = (struct qeth_card *) ptr;
1141 QETH_CARD_TEXT(card, 2, "recover1");
1142 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
1143 return 0;
1144 QETH_CARD_TEXT(card, 2, "recover2");
1145 dev_warn(&card->gdev->dev,
1146 "A recovery process has been started for the device\n");
1147 qeth_set_recovery_task(card);
1148 __qeth_l2_set_offline(card->gdev, 1);
1149 rc = __qeth_l2_set_online(card->gdev, 1);
1150 if (!rc)
1151 dev_info(&card->gdev->dev,
1152 "Device successfully recovered!\n");
1153 else {
1154 qeth_close_dev(card);
1155 dev_warn(&card->gdev->dev, "The qeth device driver "
1156 "failed to recover an error on the device\n");
1157 }
1158 qeth_clear_recovery_task(card);
1159 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1160 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
1161 return 0;
1162}
1163
1164static int __init qeth_l2_init(void)
1165{
1166 pr_info("register layer 2 discipline\n");
1167 return 0;
1168}
1169
1170static void __exit qeth_l2_exit(void)
1171{
1172 pr_info("unregister layer 2 discipline\n");
1173}
1174
1175static void qeth_l2_shutdown(struct ccwgroup_device *gdev)
1176{
1177 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1178 qeth_set_allowed_threads(card, 0, 1);
1179 if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap)
1180 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
1181 qeth_qdio_clear_card(card, 0);
1182 qeth_clear_qdio_buffers(card);
1183}
1184
1185static int qeth_l2_pm_suspend(struct ccwgroup_device *gdev)
1186{
1187 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1188
1189 if (card->dev)
1190 netif_device_detach(card->dev);
1191 qeth_set_allowed_threads(card, 0, 1);
1192 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
1193 if (gdev->state == CCWGROUP_OFFLINE)
1194 return 0;
1195 if (card->state == CARD_STATE_UP) {
1196 if (card->info.hwtrap)
1197 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
1198 __qeth_l2_set_offline(card->gdev, 1);
1199 } else
1200 __qeth_l2_set_offline(card->gdev, 0);
1201 return 0;
1202}
1203
1204static int qeth_l2_pm_resume(struct ccwgroup_device *gdev)
1205{
1206 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1207 int rc = 0;
1208
1209 if (gdev->state == CCWGROUP_OFFLINE)
1210 goto out;
1211
1212 if (card->state == CARD_STATE_RECOVER) {
1213 rc = __qeth_l2_set_online(card->gdev, 1);
1214 if (rc) {
1215 rtnl_lock();
1216 dev_close(card->dev);
1217 rtnl_unlock();
1218 }
1219 } else
1220 rc = __qeth_l2_set_online(card->gdev, 0);
1221out:
1222 qeth_set_allowed_threads(card, 0xffffffff, 0);
1223 if (card->dev)
1224 netif_device_attach(card->dev);
1225 if (rc)
1226 dev_warn(&card->gdev->dev, "The qeth device driver "
1227 "failed to recover an error on the device\n");
1228 return rc;
1229}
1230
1231struct qeth_discipline qeth_l2_discipline = {
1232 .start_poll = qeth_qdio_start_poll,
1233 .input_handler = (qdio_handler_t *) qeth_qdio_input_handler,
1234 .output_handler = (qdio_handler_t *) qeth_qdio_output_handler,
1235 .recover = qeth_l2_recover,
1236 .setup = qeth_l2_probe_device,
1237 .remove = qeth_l2_remove_device,
1238 .set_online = qeth_l2_set_online,
1239 .set_offline = qeth_l2_set_offline,
1240 .shutdown = qeth_l2_shutdown,
1241 .freeze = qeth_l2_pm_suspend,
1242 .thaw = qeth_l2_pm_resume,
1243 .restore = qeth_l2_pm_resume,
1244};
1245EXPORT_SYMBOL_GPL(qeth_l2_discipline);
1246
1247static int qeth_osn_send_control_data(struct qeth_card *card, int len,
1248 struct qeth_cmd_buffer *iob)
1249{
1250 unsigned long flags;
1251 int rc = 0;
1252
1253 QETH_CARD_TEXT(card, 5, "osndctrd");
1254
1255 wait_event(card->wait_q,
1256 atomic_cmpxchg(&card->write.irq_pending, 0, 1) == 0);
1257 qeth_prepare_control_data(card, len, iob);
1258 QETH_CARD_TEXT(card, 6, "osnoirqp");
1259 spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
1260 rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
1261 (addr_t) iob, 0, 0);
1262 spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
1263 if (rc) {
1264 QETH_DBF_MESSAGE(2, "qeth_osn_send_control_data: "
1265 "ccw_device_start rc = %i\n", rc);
1266 QETH_CARD_TEXT_(card, 2, " err%d", rc);
1267 qeth_release_buffer(iob->channel, iob);
1268 atomic_set(&card->write.irq_pending, 0);
1269 wake_up(&card->wait_q);
1270 }
1271 return rc;
1272}
1273
1274static int qeth_osn_send_ipa_cmd(struct qeth_card *card,
1275 struct qeth_cmd_buffer *iob, int data_len)
1276{
1277 u16 s1, s2;
1278
1279 QETH_CARD_TEXT(card, 4, "osndipa");
1280
1281 qeth_prepare_ipa_cmd(card, iob, QETH_PROT_OSN2);
1282 s1 = (u16)(IPA_PDU_HEADER_SIZE + data_len);
1283 s2 = (u16)data_len;
1284 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
1285 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
1286 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
1287 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
1288 return qeth_osn_send_control_data(card, s1, iob);
1289}
1290
1291int qeth_osn_assist(struct net_device *dev, void *data, int data_len)
1292{
1293 struct qeth_cmd_buffer *iob;
1294 struct qeth_card *card;
1295 int rc;
1296
1297 if (!dev)
1298 return -ENODEV;
1299 card = dev->ml_priv;
1300 if (!card)
1301 return -ENODEV;
1302 QETH_CARD_TEXT(card, 2, "osnsdmc");
1303 if ((card->state != CARD_STATE_UP) &&
1304 (card->state != CARD_STATE_SOFTSETUP))
1305 return -ENODEV;
1306 iob = qeth_wait_for_buffer(&card->write);
1307 memcpy(iob->data+IPA_PDU_HEADER_SIZE, data, data_len);
1308 rc = qeth_osn_send_ipa_cmd(card, iob, data_len);
1309 return rc;
1310}
1311EXPORT_SYMBOL(qeth_osn_assist);
1312
1313int qeth_osn_register(unsigned char *read_dev_no, struct net_device **dev,
1314 int (*assist_cb)(struct net_device *, void *),
1315 int (*data_cb)(struct sk_buff *))
1316{
1317 struct qeth_card *card;
1318
1319 *dev = qeth_l2_netdev_by_devno(read_dev_no);
1320 if (*dev == NULL)
1321 return -ENODEV;
1322 card = (*dev)->ml_priv;
1323 if (!card)
1324 return -ENODEV;
1325 QETH_CARD_TEXT(card, 2, "osnreg");
1326 if ((assist_cb == NULL) || (data_cb == NULL))
1327 return -EINVAL;
1328 card->osn_info.assist_cb = assist_cb;
1329 card->osn_info.data_cb = data_cb;
1330 return 0;
1331}
1332EXPORT_SYMBOL(qeth_osn_register);
1333
1334void qeth_osn_deregister(struct net_device *dev)
1335{
1336 struct qeth_card *card;
1337
1338 if (!dev)
1339 return;
1340 card = dev->ml_priv;
1341 if (!card)
1342 return;
1343 QETH_CARD_TEXT(card, 2, "osndereg");
1344 card->osn_info.assist_cb = NULL;
1345 card->osn_info.data_cb = NULL;
1346 return;
1347}
1348EXPORT_SYMBOL(qeth_osn_deregister);
1349
1350module_init(qeth_l2_init);
1351module_exit(qeth_l2_exit);
1352MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
1353MODULE_DESCRIPTION("qeth layer 2 discipline");
1354MODULE_LICENSE("GPL");
1355
